CPU Support Intel CPU Socket FCLGA3647 Solution 2U Server and Up Material Aluminum Heatsink with Heatpipe Embedded Fan Dimension 60 x 60 x 25 mm Speed At Duty Cycle 20%: 1400 +/- 200 RPM At Duty Cycle 3400 +/- 10% RPM At Duty Cycle 100%: 7000 +/- 10% RPM Rated Voltage 12V Bearing 2 Ball Bearing Power At Duty Cycle 20%: 0.90 W At Duty Cycle 50%: 2.04 W At Duty Cycle 100%: 5.40 W Air Flow At Duty Cycle 20%: 8.12 CFM At Duty Cycle 50%: 20.31 CFM At Duty Cycle 100%: 40.60 CFM Noise Level At Duty Cycle 20%: 16 dBA At Duty Cycle 50%: 35 dBA At Duty Cycle 100%: 50 dBA Air Pressure At Duty Cycle 20%: 0.58mm-H2O At Duty Cycle 50%: 3.65 mm-H2O At Duty Cycle 100%: 14.58 mm-H2O Lead Wire Pin Out Lead Wire Pin Out Pin1- (-) Pin2- (+) Pin3- (Techometer/Signal output) Pin4- (PWM) Thermal Grease Shin-Etsu 7762 Pre-printed Item Dimension (L inchxW inchxH inch) 4 x 4 x 3